I want to make a dice seem rolling over the UI of my game but the dice never shows.

Hi,
This is my first post so forgive my ignorancy if I do something wrong.

I am working on a tribute game (basically goosgame meets RPG). which involves movement base on a dice role. I have the game mechanics working but I now need to show dice whenever I want to do stuff. because that is how the game will work.
most of the game is 2d but I want to roll a 3d Dice over part of the UI. I created Quads to make sure the 3d object doesn't fall off the screen and i tried it out in an testgame in 2017.2 which worked fine.
Because I want to track an active game object I am using cinemachine. but somehow whatever I try the dice never show in game. Does anyone have an idea how this could be done?

No its buggin me a bit because the effect of dropping the dice ontop of the UI is kinda the point. I tried adding a second v camera but either I am to N00bish to understand cinemachine or I am taking the issue the wrong way.